Geo Better error handling of set_secondary_as_primary rake task

Sometimes current node is not set we should fail with clear error

ee/changelogs/unreleased/better_error_handling_of-set_secondary_as_primary.yml

+---
+title: 'Geo: Better error handling of geo:set_secondary_as_primary rake task'
+merge_request: 45568
+author:
+type: changed

ee/lib/gitlab/geo/geo_tasks.rb

@@ -23,6 +23,7 @@ module Gitlab
           current_node = GeoNode.current_node
 
           abort 'The primary is not set' unless primary_node
+          abort 'Current node is not identified' unless current_node
           abort 'This is not a secondary node' unless current_node.secondary?
 
           primary_node.destroy

ee/spec/lib/gitlab/geo/geo_tasks_spec.rb

@@ -39,6 +39,14 @@ RSpec.describe Gitlab::Geo::GeoTasks do
       expect { subject.set_secondary_as_primary }.to raise_error('aborted')
     end
 
+    it 'aborts if current node is not identified' do
+      secondary.destroy!
+
+      expect(subject).to receive(:abort).with('Current node is not identified').and_raise('aborted')
+
+      expect { subject.set_secondary_as_primary }.to raise_error('aborted')
+    end
+
     it 'aborts if run on a node that is not a secondary' do
       primary.update_column(:primary, false)
       secondary.update!(primary: true)